Re: [PATCH v6 5/5] rockchip: roc-rk3399-pc: Set LED only during POR and pwr_key=y

From: Kever Yang <kever.yang@rock-chips.com>
To: Jagan Teki <jagan@amarulasolutions.com>,
	Philipp Tomsich <philipp.tomsich@theobroma-systems.com>,
	Simon Glass <sjg@chromium.org>
Cc: U-Boot-Denx <u-boot@lists.denx.de>,
	linux-rockchip@lists.infradead.org,
	linux-amarula <linux-amarula@amarulasolutions.com>,
	Suniel Mahesh <sunil@amarulasolutions.com>
Subject: Re: [PATCH v6 5/5] rockchip: roc-rk3399-pc: Set LED only during POR and pwr_key=y
Date: Wed, 22 Jul 2020 20:13:25 +0800	[thread overview]
Message-ID: <ec37fa97-a623-e929-12e6-d542996d07cb@rock-chips.com> (raw)
In-Reply-To: <20200721150604.35410-6-jagan@amarulasolutions.com>


On 2020/7/21 下午11:06, Jagan Teki wrote:
> ROC-RK3399-PC has specific set of configurations for
> on-board led setup.
>
> Due to easiness for user to know the state of the board
> roc-rk339-pc board code will setup the low power led
> on/off, and waiting for user to press power key and then
> glow full power led.
>
> All this needs to happen only during power-on-reset not
> for soft reset or WDT.
>
> Also, it is not a proper usage to ask the user to press
> the Power key if the board connected remotely, so add
> the environment variable 'pwr_key' to check as well.
>
> So, user need to press Power key only
> - during POR
> - pwr_key=y
>
> Tested-by: Suniel Mahesh <sunil@amarulasolutions.com>
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang<kever.yang@rock-chips.com>

Thanks,
- Kever

> ---
> Changes for v6:
> - increase SPL _R malloc
>
>   board/firefly/roc-pc-rk3399/roc-pc-rk3399.c | 38 +++++++++++++++++++--
>   configs/roc-pc-mezzanine-rk3399_defconfig   |  4 ++-
>   configs/roc-pc-rk3399_defconfig             |  4 ++-
>   3 files changed, 42 insertions(+), 4 deletions(-)
>
> diff --git a/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c b/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c
> index 2b447df8aa..93e7d776fb 100644
> --- a/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c
> +++ b/board/firefly/roc-pc-rk3399/roc-pc-rk3399.c
> @@ -5,11 +5,15 @@
>   
>   #include <common.h>
>   #include <dm.h>
> +#include <env.h>
>   #include <log.h>
> -#include <power/regulator.h>
>   #include <spl_gpio.h>
>   #include <asm/io.h>
> +#include <power/regulator.h>
> +
> +#include <asm/arch-rockchip/cru.h>
>   #include <asm/arch-rockchip/gpio.h>
> +#include <asm/arch-rockchip/grf_rk3399.h>
>   
>   #ifndef CONFIG_SPL_BUILD
>   int board_early_init_f(void)
> @@ -32,13 +36,43 @@ out:
>   
>   #else
>   
> +#define PMUGRF_BASE	0xff320000
>   #define GPIO0_BASE	0xff720000
>   
> +/**
> + * LED setup for roc-rk3399-pc
> + *
> + * 1. Set the low power leds (only during POR, pwr_key env is 'y')
> + *    glow yellow LED, termed as low power
> + *    poll for on board power key press
> + *    once powe key pressed, turn off yellow
> + * 2. Turn on red LED, indicating full power mode
> + */
>   void led_setup(void)
>   {
>   	struct rockchip_gpio_regs * const gpio0 = (void *)GPIO0_BASE;
> +	struct rk3399_pmugrf_regs * const pmugrf = (void *)PMUGRF_BASE;
> +	bool press_pwr_key = false;
> +
> +	if (IS_ENABLED(CONFIG_SPL_ENV_SUPPORT)) {
> +		env_init();
> +		env_load();
> +		if (env_get_yesno("pwr_key") == 1)
> +			press_pwr_key = true;
> +	}
> +
> +	if (press_pwr_key && !strcmp(get_reset_cause(), "POR")) {
> +		spl_gpio_output(gpio0, GPIO(BANK_A, 2), 1);
> +
> +		spl_gpio_set_pull(&pmugrf->gpio0_p, GPIO(BANK_A, 5),
> +				  GPIO_PULL_NORMAL);
> +		while (readl(&gpio0->ext_port) & 0x20)
> +			;
> +
> +		spl_gpio_output(gpio0, GPIO(BANK_A, 2), 0);
> +	}
>   
> -	/* Turn on red LED, indicating full power mode */
>   	spl_gpio_output(gpio0, GPIO(BANK_B, 5), 1);
>   }
> +
>   #endif
> diff --git a/configs/roc-pc-mezzanine-rk3399_defconfig b/configs/roc-pc-mezzanine-rk3399_defconfig
> index 15d511741f..9a01de454f 100644
> --- a/configs/roc-pc-mezzanine-rk3399_defconfig
> +++ b/configs/roc-pc-mezzanine-rk3399_defconfig
> @@ -19,7 +19,8 @@ CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-roc-pc-mezzanine.dtb"
>   CONFIG_DISPLAY_BOARDINFO_LATE=y
>   # CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
>   CONFIG_SPL_STACK_R=y
> -CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x10000
> +CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x20000
> +CONFIG_SPL_ENV_SUPPORT=y
>   CONFIG_SPL_SPI_LOAD=y
>   CONFIG_TPL=y
>   CONFIG_CMD_BOOTZ=y
> @@ -34,6 +35,7 @@ CONFIG_DEFAULT_DEVICE_TREE="rk3399-roc-pc-mezzanine"
>   CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
>   CONFIG_ENV_IS_IN_SPI_FLASH=y
>   CONFIG_SYS_RELOC_GD_ENV_ADDR=y
> +CONFIG_SPL_DM_SEQ_ALIAS=y
>   CONFIG_ROCKCHIP_GPIO=y
>   CONFIG_SYS_I2C_ROCKCHIP=y
>   CONFIG_MISC=y
> diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig
> index 2a6d0d22c8..6181da763d 100644
> --- a/configs/roc-pc-rk3399_defconfig
> +++ b/configs/roc-pc-rk3399_defconfig
> @@ -19,7 +19,8 @@ CONFIG_DEFAULT_FDT_FILE="rockchip/rk3399-roc-pc.dtb"
>   CONFIG_DISPLAY_BOARDINFO_LATE=y
>   # CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
>   CONFIG_SPL_STACK_R=y
> -CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x10000
> +CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN=0x20000
> +CONFIG_SPL_ENV_SUPPORT=y
>   CONFIG_SPL_SPI_LOAD=y
>   CONFIG_TPL=y
>   CONFIG_CMD_BOOTZ=y
> @@ -33,6 +34,7 @@ CONFIG_DEFAULT_DEVICE_TREE="rk3399-roc-pc"
>   CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
>   CONFIG_ENV_IS_IN_SPI_FLASH=y
>   CONFIG_SYS_RELOC_GD_ENV_ADDR=y
> +CONFIG_SPL_DM_SEQ_ALIAS=y
>   CONFIG_ROCKCHIP_GPIO=y
>   CONFIG_SYS_I2C_ROCKCHIP=y
>   CONFIG_MISC=y